Welcome to the video

In this video, we'll be looking at the present perfect tense

First we're going to focus on the form,

or the actual words that you need to use to form the tense

Now, the present perfect is a compound tense

Meaning that you need two verbs together

to...aahhh...form it

Aaahhh, first you have an auxiliary verb

which is followed by the main verb

In the present perfect

The auxiliary verb is 'have'

Now, this is important, so pay attention!

The auxiliary verb must change form to agree with the subject

Then we have the main verb

which is in the past participle form

For example, I could say 'I have done'

Or, 'he has done'

Okay, now let's take a look at the form

for statements- both positive and negative

in a positive statement you have the subject

plus the auxiliary verb, and then the main verb

For example,...

Now, for a negative statement

you need to put the negative particle

between the auxiliary verb

and the main verb

Now, the...uhhh...not

can also be contracted to 'haven't'

or 'hasn't'

Okay...now let's take a look at questions

both positive and negative

The main thing about questions is you have to switch the order

of the subject and the auxiliary verb

So the sentence now begins with the auxiliary verb

plus the subject

Now, just as in the negative statement

in a negative question, the negative particle 'not'

goes after the auxiliary verb

So, we have....

Now, in the question form

It is pretty much always contracted

to 'n't',...'haven't'

because 'have not you done?' sounds a little bit awkward

it's too long. So everybody says 'haven't you done?'